Suvathi B1, Allwin L*2, Manivannan. MI3 and M. Paramasivan4
1Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
2Department of Agricultural Entomology, AC&RI, Killikulam, Tamil Nadu Agricultural University, Tamil Nadu, India
3Department of Horticulture, AC&RI, Killikulam, Tamil Nadu Agricultural University, Tamil Nadu, India
4Department of Soil Science and Agricultural Chemistry, AC&RI, Killikulam, Tamil Nadu Agricultural University, Tamil Nadu, India
Email: allwin.dr@gmail.com
Received-04.02.2024, Revised-22.02.2024, Accepted-10.03.2024
Abstract: Entomopathogenic potential of nineteen Bacillius thuringiensisstrains were evaluated against neonate larvae of S. frugiperda.KKM 2 and KKM 14 were caused above 60% mortality. KKM 5, KKM 17 and KKM 18 were showed lowest per cent mortality (16.67%). Silkworms were highly susceptible to the selected B. thuringiensis isolates. Screened B. thuringiensisstrains did not cause any adverse effects on beneficial organisms viz., honey bees and Trichogramma chilonis.
Keywords: B. thuringiensisstrains, Bioassay, S. frugiperda, Biosafety
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